THE 250mm WORKING DISTANCE OBJECTIVE LENS IS THE STANDARD LENS ON 99% OF THE MICROSCOPES WE SELL. IT WILL BE INCLUDED WITH THE MICROSCOPE WHEN SHIPPED UNLESS ANOTHER ONE IS SPECIFIED. IF THERE IS ANY DOUBT AS TO WHICH ONE YOU SHOULD USE YOU MAY ORDER A SECOND ONE AND RETURN THE ONE THAT YOU DO NOT WANT FOR FULL REFUND.
